CN215336257U

CN215336257U - Abrasion protection device for plough ditch of horizontal heating surface pipe of boiler

Info

Publication number: CN215336257U
Application number: CN202120773565.9U
Authority: CN
Inventors: 蔺鑫碧; 陈平; 张磊; 王永刚; 王洪; 马峰; 周世军; 祁青福; 赵小兵
Original assignee: Jiayuguan Hongsheng Electric Heating Co ltd
Current assignee: Jiayuguan Hongsheng Electric Heating Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-12-28
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a protection device for preventing abrasion of a ditch of a boiler horizontal heating surface pipe, which comprises a hanging pipe and a coiled pipe, wherein the protection device is arranged on one side of the hanging pipe, which faces to soot blowing airflow, and comprises a backrest pipe, a protective tile and a positioning clamp pipe, the protective tile is U-shaped, one side of the backrest pipe is in contact with the outer wall of the hanging pipe, and the other side of the backrest pipe is fixedly connected with the arc-shaped outer wall of the protective tile; a group of positioning plates are symmetrically arranged on two side walls of the backrest pipe, the upper surfaces of the positioning plates are tightly attached to the bottom wall of the bottommost coiled pipe, and the lower surfaces of the positioning plates are provided with steel belts connected with angle plates of the hanging pipe; the hanging tube is clamped with a group of positioning tube clamps, and the positioning tube clamps are fixedly connected with the bottom end of the backrest tube. When the soot blower arranged at the tail of the boiler blows soot, the device can effectively prevent soot blowing airflow from wrapping particles and soot to wash the area of the hanging pipe to form furrow abrasion, and prevent the event of thinning and leakage of the serpentine pipe group. The device is suitable for installation and use in the horizontal heating surface area of the vertical flue of the large and medium-sized boiler.

Description

Abrasion protection device for plough ditch of horizontal heating surface pipe of boiler

Technical Field

The utility model belongs to the field of large and medium power station boilers, and particularly relates to a protection device for abrasion of a horizontal heating surface pipe furrow of a boiler.

Background

The existing large and medium boilers mostly adopt a suspension structure and are arranged in a pi shape, a large number of horizontal reheaters, horizontal superheaters and horizontal coal economizers are arranged in a tail vertical flue, the heated surface pipes are arranged in the vertical flue in a serpentine winding mode, and a vertical suspension system corresponding to the heated surface pipes is required to be arranged on the heated surface pipes in a huge number and weight, so that the serpentine pipes which are arranged horizontally and longitudinally are fixed in a designed area. In order to arrange the horizontally-arranged serpentine tube groups in order longitudinally, the arrangement patterns are the same, and the gaps are equal, so that the normal through flow of high-temperature flue gas is not blocked, the heated surface tube is not abraded by particle smoke dust in the flue gas, and combined limiting devices such as angle plates, tube clamps, round steel and the like are inevitably generated. The suspension system provided with the limiting device generates geometric gaps with different shapes, when the soot blowing airflow reaches the gaps of the suspension system, part of the soot blowing airflow is blocked, the direction of the soot blowing airflow is changed, the soot blowing airflow after the direction change is coated with particle dust to accelerate to pass through the gaps, and the snake-shaped tube group which is longitudinally and horizontally arranged is clamped out of the tube to plough a deep groove, so that the heated surface tube is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a protection device for preventing a pipe furrow of a horizontal heating surface of a boiler from being abraded so as to solve the problems.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a kind of boiler is heated the pipe furrow of the surface and abraded the protective device horizontally, including hanging the pipe and coil pipe, the said hanging pipe sets up the protective device towards one side which blows the soot air current, the protective device includes the back pipe, protects tile and locating clip tube, the protection tile is U-shaped, one side of the back pipe contacts with outer wall which hangs the pipe, another side and arc-shaped outer wall of protecting the tile fixedly connect; a group of positioning plates are symmetrically arranged on two side walls of the backrest pipe, the upper surfaces of the positioning plates are tightly attached to the bottom wall of the bottommost coiled pipe, and the lower surfaces of the positioning plates are provided with steel belts connected with angle plates of the hanging pipe; the hanging tube is clamped with a group of positioning tube clamps, and the positioning tube clamps are fixedly connected with the bottom end of the backrest tube.

In order to further realize the utility model, a plurality of groups of connecting plates are arranged between the backrest pipe and the protective tile, each group of connecting plates are symmetrically arranged on the outer walls of two sides of the backrest pipe, and the extending ends of the connecting plates are fixedly connected with the arc-shaped outer walls of the protective tile.

In order to further realize the utility model, the positioning pipe clamp is arranged below the bottommost layer of the coiled pipe. The anti-abrasion device is used for fixing the anti-abrasion device, so that the anti-abrasion device cannot be separated from the original position under the action of the self weight, the high-temperature flue gas of the hearth and the high-speed airflow of the soot blower.

In order to further realize the utility model, the positioning pipe clamp comprises two pipe clamps which are symmetrically arranged, and a group of screw holes are arranged on the pipe clamps.

In order to further realize the utility model, the U-shaped bottom of the protective tile is in a semi-arc shape, the length of the extending end of the semi-arc shape is 10mm, and the diameter of the protective tile is larger than the width of the backrest pipe.

In order to further realize the utility model, the backrest tube is a square tube.

Compared with the prior art, the utility model has the beneficial effects that:

the protective bush can block high-speed airflow emitted by the nozzle of the soot blower, and can prevent a large amount of airflow from escaping from the edge of the arc semicircular bush while guiding the airflow of the soot blower and flowing through a gap in the middle of the horizontal coiled pipe, thereby avoiding abrasion of the coiled pipe fixed on the pipe clamp.

The backrest pipe and the protective tile are arranged close to the vertical hanging pipe, so that the linear distance between the pipe clamp, the angle plate and the edge of the protective tile is increased, the soot blowing airflow of the soot blower cannot reach the angle plate area of the pipe clamp, the effect of preposed flow guide is realized, and the generation of a plow ditch of a horizontal coiled pipe is avoided.

The positioning plate limits the depth of the abrasion-proof device assembly installed in the horizontal serpentine tube group and the height of the abrasion-proof device assembly exposed outside the serpentine tube group, and when the soot blower is shot to the hanging tube, the tube clamps at two sides and the angle plate in the direction of high-speed airflow with an angle, the effect of leading flow is achieved.

When the soot blower arranged at the tail of the boiler blows soot, the device can effectively prevent soot blowing airflow from wrapping particles and soot to wash the area of the hanging pipe to form furrow abrasion, and prevent the event of thinning and leakage of the serpentine pipe group. The device is suitable for installation and use in the horizontal heating surface area of the vertical flue of the large and medium-sized boiler.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

the reference numerals have the following meanings: 1. hanging a pipe; 2. a back tube; 3. protecting the tile; 4. positioning the clamp pipe; 5. positioning a plate; 6. a serpentine tube; 7. a gusset; 8. a connecting plate.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1-2, a protection device for preventing a boiler horizontal heating surface pipe from being worn by a furrow comprises a hanging pipe and a coiled pipe, wherein the hanging pipe 1 is provided with the protection device towards one side of a soot blowing airflow, the protection device comprises a backrest pipe 2, a protective tile 3 and a positioning clamp pipe 4, the protective tile 3 is U-shaped, one side of the backrest pipe 2 is in contact with the outer wall of the hanging pipe 1, and the other side of the backrest pipe is fixedly connected with the arc-shaped outer wall of the protective tile 3; a group of positioning plates 5 are symmetrically arranged on two side walls of the backrest tube 2, the upper surface of each positioning plate 5 is tightly attached to the bottom wall of the bottommost coiled tube 6, and the lower surface of each positioning plate 5 is provided with a steel belt connected with an angle plate 7 of the hanging tube 1; a group of positioning pipe clamps 4 are clamped on the hanging pipe 1, and the positioning pipe clamps 4 are fixedly connected with the bottom end of the backrest pipe 2.

Set up a plurality of groups connecting plate 8 between back pipe 2 and the protection tile 3, every group connecting plate 8 is all symmetrical to be set up on the both sides outer wall of back pipe 2, the extension end of connecting plate 8 and the arc outer wall fixed connection of protection tile 3.

The positioning pipe clamp 4 is arranged below the bottommost layer of the coiled pipe 6.

The positioning pipe clamp 4 comprises two pipe clamps which are symmetrically arranged, and a group of screw holes are formed in each pipe clamp.

The U-shaped bottom of the protective tile 3 is in a semi-circular arc shape, the length of the extending end of the semi-circular arc shape is 10mm, and the diameter of the protective tile 3 is larger than the width of the backrest pipe 2.

The backrest tube 2 is a square tube.

The material of the protective tile is 304 stainless steel, the material of the square backrest tube is Q235B, the square backrest tube is cut from square steel with the specification of 50 multiplied by 1200mm, the material of the connecting plate is Q235B, the specification of 53 multiplied by 40 multiplied by 4mm, the material of the positioning plate is Q235B, the specification of 50 multiplied by 45 multiplied by 8mm, the material of the positioning tube clamp is pressed from 304 stainless steel laths with the width of 50mm and the thickness of 6mm, and the clamping bolt is M16 multiplied by 35 stainless steel.

Claims

1. The utility model provides a boiler level is heated face pipe furrow wearing and tearing protector, includes hangs pipe and coiled pipe, its characterized in that: a protection device is arranged on one side, facing the soot blowing airflow, of the hanging pipe (1), and comprises a backrest pipe (2), a protective tile (3) and a positioning clamp pipe (4), wherein the protective tile (3) is U-shaped, one side of the backrest pipe (2) is in contact with the outer wall of the hanging pipe (1), and the other side of the backrest pipe is fixedly connected with the arc-shaped outer wall of the protective tile (3); a group of positioning plates (5) are symmetrically arranged on two side walls of the backrest pipe (2), the upper surfaces of the positioning plates (5) are tightly attached to the bottom wall of the bottommost coiled pipe (6), and the lower surface of each positioning plate (5) is provided with a steel belt connected with an angle plate (7) of the hanging pipe (1); a group of positioning pipe clamps (4) are clamped on the hanging pipe (1), and the positioning pipe clamps (4) are fixedly connected with the bottom end of the backrest pipe (2).

2. The boiler horizontal hot face tube furrow wear protection apparatus of claim 1, wherein: set up a plurality of group's connecting plate (8) between back pipe (2) and protection tile (3), every group connecting plate (8) equal symmetry sets up on the both sides outer wall of back pipe (2), the extension end of connecting plate (8) and the arc outer wall fixed connection of protection tile (3).

3. The boiler horizontal hot face tube furrow wear protection apparatus of claim 1 or 2, wherein: the positioning pipe clamp (4) is arranged below the bottommost layer of the coiled pipe (6).

4. The boiler horizontal hot face tube furrow wear protection apparatus of claim 3, wherein: the positioning pipe clamp (4) comprises two pipe clamps which are symmetrically arranged, and a group of screw holes are formed in each pipe clamp.

5. The boiler horizontal hot face tube furrow wear protection apparatus of claim 4, wherein: the U-shaped bottom of the protective tile (3) is in a semi-circular arc shape, the length of the extending end of the semi-circular arc shape is 10mm, and the diameter of the protective tile (3) is larger than the width of the backrest pipe (2).

6. The boiler horizontal hot face tube furrow wear protection apparatus of claim 5, wherein: the backrest tube (2) is a square tube.